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Three concentric metallic shells A , B and C of radii a, b and c (a lt b lt c) have surface densities + sigma ,- sigma and +sigma respectively as shown in Fig. If shells A and C are at the same potential , obtain the relation between a , b and c. |
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Answer» SOLUTION :If `V_(A) = V_(C)` , then we have `[(sigma)/(in_(0)) [a - B + c] = (sigma)/(in_(0)) [a^(2) - b^(2))/(c) + c] IMPLIES a - b + c = (a^(2) - b^(2))/(c) + c implies (a- b) = (a^(2) - b^(2))/(c) implies c = a + b` |
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